ACT - 小型汽车 - DKT - When reversing a vehicle you should -

Check the internal and both external mirrors, look behind to ensure that the way is clear and look over your left shoulder through the rear window while reversing.

Look behind to ensure the way is clear then reverse looking in the mirrors only.

Sound your horn and then reverse using the hazard warning lights.

(246/376) When reversing a vehicle you should -